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1. According to PTI Specifications, what is the allowable tolerance for the
measurement of elongations in an elevated (structural) slab?
a. ±5%
b. ±7%
c. ±10%
d. It doesn't matter as long as the tendons were stressed to the correct gauge
pressure. ---------CORRECT ANSWER-----------------b. ±7%
2. The recommended space, "Y" between tendon bundles in a beam is.
a. 4in.
b. 1.5 in.
c. 1 in.
d. 0.5. ---------CORRECT ANSWER-----------------b. 1.5 in.
3. What is the minimum number of integrity tendons required in each direction
over columns in a flat slab?
,a. One
b. Two
c. Three
d. There is no minimum requirement. ---------CORRECT ANSWER-----------------b.
Two
4. In an encapsulated system, how much bare strands is acceptable behind
stressing anchorage?
a. None
b. ½" maximum
c. 6" maximum
d. It does not matter. ---------CORRECT ANSWER-----------------a. None
5. Longitudinal cracking of wedges may occur and is acceptable as a result of
wedges moving to their final wedge set position.
a. True
b. False ---------CORRECT ANSWER-----------------a. True
6. What should be done when the beam stirrup spacing does not match the PT
support bar spacing?
, a. Move the support bar to the nearest stirrup location and adjust the vertical
height so that a smooth tendon profile is maintained, add additional support bars
at other stirrup locations if needed so a maximum allowable support spacing is
not exceeded.
b. Change the spacing of the beam stirrup to match the support bar spacing.
c. Do not proceed with installation until further instructions are received.
d. None of the above. ---------CORRECT ANSWER-----------------a. Move the support
bar to the nearest stirrup location and adjust the vertical height so that a smooth
tendon profile is maintained, add additional support bars at other stirrup
locations if needed so a maximum allowable support spacing is not exceeded.
7. When installing tendons in a narrow joist:
a. It is important to avoid excessive wobble in tendons that could lead to concrete
blowouts.
b. Tendon placement is not critical since there is only one tendon in each joist.
c. It is important to check for any reverse curvature in a tendon profile to avoid
problems.
d. Both A and C. ---------CORRECT ANSWER-----------------a. It is important to avoid
excessive wobble in tendons that could lead to concrete blowouts.
8. Of the following, what is the most important thing a contractor must do when
field installing a fixed-end anchor?